I am trying to convert a Perl script to Ruby and have been having some
difficulty along the way (mostly because I don't know Perl).
I am currently stumped on one particular line in the old Perl script:
---
foreach (@rawfields) {if ($_ > 0){$_ = int($_*100)/100}}
---
Background context: @rawfields is an array that holds the contents of
an imported line from a text file. Here are some sample lines from
the input file:
---
"0" "0" "0" "0" "0" "0" "Bar"
"5.66666" "0" "3.566662" "1.383332" "6" "0" "Foo"
---
My guess is that the Perl line iterates through each of the elements
in the array and rounds any integers to 2 decimals.
This raises a few problems for me.
1) How can I easily tell if the (string) value in each array element
is an integer or has a decimal value?
=> The desired output for text file line 2 is :
---
"5.67" "0" "3.57" "1.38" "6" "0" "Foo"
---
I tried the following in Ruby:
---
@rawfields.each_index do |x|
if ( @rawfields[x].to_f > 0 )
@rawfields[x] = ( (( @rawfields[x].to_f * 100 ).round.to_i ).to_f /
100 ).to_s
end
end
---
But it produces the following output:
---
"5.67" "0" "3.57" "1.38" "6.0" "0" "Foo"
---
...which is close, but not quite what I want. My output file now has
values like 1.0, 5.0, 62.0, etc. If it's an integer, I don't want to
see the decimal.
Can anyone suggest an improvement to my code or a better translation
from Perl?
TIA. Paul.